CONFIG_CPU_R5432 is not available for the selected architecture x86.
Result is shown for architecture mips

R5432

modulename: c-r4k.ko

and/or

dump_tlb.ko

and/or

r4k_fpu.ko

configname: CONFIG_CPU_R5432

CPU type
└─>R5432
In linux kernel since version 2.6.12 )
source code:
arch/mips/mm/